Extension table



M. WURM EXTENSION TABLE May 30, 1933.

Filed Dec. 16, 1952 I IIIIIPIII INVENTOR Patented May 30, 1933 UNITEDSTATES MAX wtrmvr, or BROOKLYN, NEW YORK EXTENSION TABLE Applicationfiled December 16, 1932. Serial No. 647,569.

My invention relates in general to means for extending temporarily theworking or service surface of a cooperating member and it is especiallyapplicable to the type of ex tension tables having a fixed top-memberwhich is to be extended in service at one or more'of its edges, such forexample, as the refectory style of table.

An important advantage possessed by my 0 improvements is that of extremesnnphcity;

also that of minimizing the amount of hardware necessary for mountingand operating the extension leaf; also the facility of quick and smoothoperation of the mechanism in the movements of bringing the adjustableleaf into position of service and returning 1t to stored position. Thereare other advantages to be derived from the use of my 1mprovcments, aswill appear from the detal led description hereinafter given inconnection with the drawing.

I have illustrated types of my invention 1n the accompanying drawing,wherein Figure 1 shows a top plan view of an extension table providedwith my improvements; the upper part of the figure showing the foldingextension leaf as drawn out with its slides from stored position, inplace to be swung upwardly and outwardly over the slides and the aproncarried thereby and in position to be then slid inwardly into abuttingrelation with the top-member, which latter condition is shown at thebottom of the figure.

Figure 2 shows a view in vertical crosssection of the structure shown inFig. 1, the plane of the section being indicated by line 2-2, in Fig. 1.

Figure 3 shows a vertical cross-sectional view of a portion of thestructure shown in Figs. 1 and 2, but with the folding extension leaffolded down and slid under the top-memher in stored position.

Referring to the drawing, in which like numerals of reference designatelike parts throughout, 1, 1, indicate parallel bridge pieces to therespective ends of which are secured vertical aprons 2 and 3, whichdepend from the respective ends of the table top-member ,4, to whichthey are secured.

Upon the bridge pieces are secured transverse horizontal guides 5 and 6.

At the opposite long edges of the top-memher 4, are mounted foldingextension leaves 7 and 8, respectively. The leaf 7 is mounted 5 to swingsubstantially through a half-circle on a horizontal axis which liesparallel with the long edge of the top-member which it extends. The leaf7 is moved in response to the movements of the horizontal reciprocationof the slides 9 and 10, mounted re-' spectiv-ely upon the inner faces ofthe guides 5 and 6. Upon the outer ends of the respective slides 9 and10, is secured a vertical apron 11, which coo crates with aprons 2 g and3, and top-mem er' 4, when they are moved to their inner limit ofmovement. The axis of motion of leaf 7 is at right-angles to thedirection of movement of the sliding means and is located between theouter end 79 thereof and the leaf. The construction and arrangement issuch as topermit of the leaf being folded inwardly towards thetop-member with its underside uppermost in stored position and alsofolded outwardly away from said top-member with its upperside uppermostwhen abutting the top-member in position of service. This may beaccomplished by use of ordinary hinges which'I U have here shown ascomprisinga pair of 30 plate hinges secured between the leaf 7, and themovable means to the movements of which the leaf responds. The plate 12,of one hinge is attached to slide 9, and its mate I 13 is attached tothe flat surface of the un- 35 dersideof the leaf 7. The plate 14:, ofthe other hinge, is attached to the other slide 10, and its mate 15, tothe flat underside of the leaf. The axial line of the hinges is suchthat the leaf may be swung in the way just described. In the presentconstruction the axis of motion afforded by. the hinges lies between therespective points of attachment of the hinges to the leaf and the slidesand in a plane slightly above the level of the underside of the leaf.One end of each hinge may if preferred be mounted directly upon theapron 11, which is virtually a part of the sliding means. With thisarrangement, when the leaf is folded down in position of storage, thehinge is unfolded or open and when the leaf is folded outwardly intoposition of service, the hinge is folded up or closed.

The leaf 7, when swung towards the topmember with its upper side downupon the slides, as shown in Fig. 1, at the upper part thereof, may thenbe stored under such memher by pushing the slides in to their inwardlimit of movement and this will bring the apron 11 against therespective ends of aprons 2 and 3 and beneath the edge of thetop-member, as shown in F i 3. In order to adjust the leaf 7, in placefor service to extend the top-member, the apron 11 is pulled upon so asto draw it and the slides outwardly, and when in the position shown atthe upper part of Fig. 1., and the right hand side of Fig. 2, the leafis swun upwardly away from the member, as indicated in dotted lines inFig. 2, and until it is folded down upon apron 11, whereupon the apronand slides are pushed inwardly to bring the edge of the leaf intoabutting relation with the edge of the top-member, as shown in both 4 ofsaid Figs. 1 and 2. It will be noted that the axis of motion of the leaf7 is so located relatively to the apron 11, that when the leaf isadjusted in the plane of the top member in position of service, it restsupon the edge of the apron at about the center of the width of the leafand thereby provides a stable construction which will withstand pressureupon the outer edge of the leaf when in service. This axis is locatedalso quite near the apron, thereby reducing the range of movementoutwardly of the sliding means and apron, when bringing the leaf intoposition to be swung up; the nearer this axis to the apron, the less therange of outward movement.

' The leaf 7 is so hinged that the axis of motion lies just off the flatsurface of the leaf and overhangs thebevel 16, at the edge of the leaf,so that the plates 13 and 15, of the respective hinges, take under theabutting edge of the top-member and engage the same in looking relationagainst upward movement of the abutting edge of the leaf, as indicatedin Fig. 2, at the left-hand side thereof. The bevel 16 of the leaf isformed in counterpart to the bevel 17, of the top-member, so that a snugfit is provided between the abutting edges thereof. As this pair ofordinary stock hinges constitutes the entire hardware of the structure,an extremely simple and inexpensive construction is thereby provided,and in cases where the hinges are of a size two by one and one-eighthinches, the length of the hearing of the hinge joints affords a stableand firm construction which will give true movement in theswingingadjustment of the leaf and avoid wabbling thereof.

Each of the slides 9 and 10 is formed upon its upper side with adownwardly extending recess or cut-away place 18, direct- .is identicalwith that of leaf 7.

Having thus described my invention, what I claim and desire to secure byLetters Patent, is: i

1. The combination with a member whose working or service surface may betemporarily extended, of a folding extension leaf, sliding means movablewith respect to said memher, said leaf being mounted to swing on saidsliding means so that it may be foldedinwardly toward said member withits underside uppermost in stored position and also folded outwardlyaway from said member with its 'upperside uppermost and abutting saidmember in position of service.

2. The combination with a top-member, of sliding means movable withrespect to said member so that it may be moved inwardly beneath saidmember and outwardly beyond it, said sliding means being provided withan apron cooperating with saidmember,a folding extension leaf hinged tosaid sliding means so that said leaf may be folded inwardly towards saidmember with its underside uppermost in position to be stored and foldedoutwardly away from said member with its underside overlying said apronand abutting said member in position of service.

3. The combination with a top-member, of guides beneath said member andslides mounted on said guides,a folding extension leafmount ed abovesaid slides so as to swing on an axis at right-angles to the directionof movement of said slides and moving in response to the movementthereof, said leaf being adapted to be folded inwardly towards saidmember into a plane disposed between said member and slides so that itmay be stored beneath said member and also adapted to be foldedoutwardly away from said member and into the plane thereof in abuttingrelation therewith in service position.

4. The combination with a member whose working or servicesurface may betemporarily extended, of movable means disposed below the level of saidmember, an extension leaf mounted to fold with respect to said memberand moving in response to the movements of said movable means so that itmay be adjusted into and below the plane of said member, and when in thelatter position to lie with its upper-face down across the movablemeans. a

, 5. The combination with a top-member, of

movable means disposed below the level of said top-member, a foldingextension leaf mounted to swing on an axis so that it may be adjustedinto and also below the level of said top-member and moving in responseto the movements of said movable means, the

said axis of motion of the leaf being disposed below the level of saidtop-member when the leaf is adjusted into the plane thereof for serviceand disposed above the plane of said leaf when the latter is adjustedbelow the plane of said top-member in stored position.

6. The combination with a top-member, of movable means disposed belowthe plane of said topmember, a. folding extension leaf mounted to swingon an axis so that it may be adjusted into and also below the plane ofsaid top-member and moving in response to the movements of said movablemeans, the said axis of motion of said leaf being disposed above saidleaf when it is folded with its upperside down and disposed below theplane of said top-member when said leaf is adjusted into position of useand abutting said topmember.

7 The combination with a member whose working or service surface may betemporarily extended, of afoldingextensionleaf,sliding means movablewith respect to said member, said leaf being mounted to swing on saidsliding means so that it may be folded inwardly towards said member withits underside uppermost in stored position and also folded outwardlyaway from said member with its upperside uppermost and abutting saidmember in position of service, the axis of motion of said leaf beingdisposed at or near the edge of said leaf which abuts the edge of saidmember when in position of service.

8. The combination with a member whose working or service surface may betemporarily extended, of a folding extension leaf, sliding means movablewith respect to said member, said leaf being mounted to swing on saidsliding means so that it may be folded inwardly towards said member withits underside uppermost in stored position and also folded outwardlyaway from said member with its upperside uppermost and abutting saidmember in position of service, the axis of motion of said leaf beingdisposed upon the underside of said leaf at or near the edge thereofwhich abuts said member when in position of service.

9. The combination with atop-member, of movable means disposed below theplane of said top-member, a folding extension leaf hinged upon itsunderside above said movable means and moving in response to themovements thereof, one part of said hinge being mounted upon theunderside of said leaf and the other upon a part disposed beyond theedge of said leaf which lies outermost when the leaf is in storedposition.

permost in stored position and also folded outwardly away from saidmember with its upperside uppermost and in the plane of said member, onepart of the swinging mounting being attached to the underside of saidleaf and the other part to said slides.

11. The combination with a top-member, of slides disposed below saidmember, a folding extension leaf hinged to said slides so that it may beadjusted into and below the plane of said member and moving in responseto the movement of said slides, said hinge being so arranged that thearticulated part thereof projects free when folded and takes under andengages the underside of said topmember when the leaf is adjusted intoservice position therewith.

12. The combination with a member whose working or service surface maybe temporarily extended, of a folding extension leaf, sliding meansmovable with respect to said memher, said leaf being hinged to saidmovable means so that it may be folded inwardly towards said member withits underside uppermost in stored position and the hinge unfolded, andalso may be folded outwardly away from said member with its uppersideuppermost in service position and said hingethen folded.

MAX WVURM.

